// Copyright (C) 2016 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- esid: sec-globaldeclarationinstantiation es6id: 15.1.8 description: Declaration of variable where permissible info: | [...] 11. Let declaredVarNames be a new empty List. 12. For each d in varDeclarations, do a. If d is a VariableDeclaration or a ForBinding, then i. For each String vn in the BoundNames of d, do 1. If vn is not an element of declaredFunctionNames, then a. Let vnDefinable be ? envRec.CanDeclareGlobalVar(vn). b. If vnDefinable is false, throw a TypeError exception. c. If vn is not an element of declaredVarNames, then i. Append vn to declaredVarNames. [...] 18. For each String vn in declaredVarNames, in list order do a. Perform ? envRec.CreateGlobalVarBinding(vn, false). [...] 8.1.1.4.15 CanDeclareGlobalVar 1. Let envRec be the global Environment Record for which the method was invoked. 2. Let ObjRec be envRec.[[ObjectRecord]]. 3. Let globalObject be the binding object for ObjRec. 4. Let hasProperty be ? HasOwnProperty(globalObject, N). 5. If hasProperty is true, return true. 6. Return ? IsExtensible(globalObject). includes: [propertyHelper.js] ---*/ $262.evalScript('var brandNew;'); verifyProperty(this, 'brandNew', { value: undefined, writable: true, enumerable: true, configurable: false, }); Object.defineProperty( this, 'configurable', { configurable: true, writable: false, enumerable: false, value: 0 } ); Object.defineProperty( this, 'nonConfigurable', { configurable: false, writable: false, enumerable: false, value: 0 } ); // Prevent extensions on the global object to ensure that detail is not // considered by any of the declarations which follow. Object.preventExtensions(this); $262.evalScript('var configurable;'); verifyProperty(this, 'configurable', { value: 0, writable: false, enumerable: false, configurable: true, }); $262.evalScript('var nonConfigurable;'); verifyProperty(this, 'nonConfigurable', { value: 0, writable: false, enumerable: false, configurable: false, }); reportCompare(0, 0);